/*使用工具类实现:
    1. 获取系统时间
    2. 判断文件是否存在
    3. 获取文件所在路径
    4. 创建目录
*/
#pragma once
#include <iostream>
#include <ctime>
#include <string>
#include <sys/stat.h>
#include <unistd.h>

namespace superlog {
    namespace util {
        class Date{
            public:
                static size_t now(){
                     return (size_t)time(nullptr);
                }
        };
        class File{
            public:
                static bool exists(const std::string &pathname){
                    // return (access(pathname.c_str(), F_OK) == 0); // 只支持Linux
                    struct stat st;
                    if (stat(pathname.c_str(), &st) < 0){
                        return false;
                    }
                    return true;
                }
                static std::string path(const std::string &pathname){
                    size_t pos = pathname.find_last_of("/\\");
                    if (pos == std::string::npos) return ".";
                    return pathname.substr(0, pos+1);
                }
                static void createDirectory(const std::string &pathname){
                    // ./abc/bcd/sss
                    size_t pos = 0, idx = 0;
                    while(idx < pathname.size()){
                        pos = pathname.find_first_of("/\\", idx);
                        if (pos == std::string::npos){
                            mkdir(pathname.c_str(), 0777);
                        }
                        std::string parent_dir = pathname.substr(0, pos + 1);
                        if (exists(parent_dir) == true){
                            idx = pos + 1;
                            continue;
                        }
                        mkdir(parent_dir.c_str(), 0777);
                        idx = pos + 1;
                    }
                }
        };
    }
} // namespace superlog
